Learning Outcome: Prepare a takeoff for rough carpentry work. Learning Objectives: Define board measure units. Measure quantities of lumber in board measure units. Describe how wood framed floor systems and wall systems are measured. Describe how wood framed roof systems including wood trusses are measured. Describe how rough hardware is measured. ( 1 Pcs) Prepare a takeoff for rough carpentry and hardware for a house in accordance with rules of measurement and requirements of presentation.
• Measuring Carpentry Work • Module 15 Module 15: Measuring Rough Carpentry Work Learning Outcome: • Prepare a takeoff for rough carpentry work Learning Objectives: Define board measure units Measure quantities of lumber in board measure units Describe how wood framed floor systems and wall systems are measured Describe how wood framed roof systems including wood trusses are measured Describe how rough hardware is measured ( Pcs) Prepare a takeoff for rough carpentry and hardware for a house in accordance with rules of measurement and requirements of presentation © 2016, Southern Alberta Institute of Technology Measuring Rough Carpentry Work • In order to assess rough carpentry requirements, the estimator has to be familiar with framing methods and be aware of design requirements © 2016, Southern Alberta Institute of Technology Board Measure • The unit of measurement of lumber (metric system) linear metre However, with the English system, the unit is generally Board Measure (BM), Board Foot (BF) BUT first measured in LF then converted to BF for pricing • 1,000-Board Feet = MBF • Board Measure = cubic measure where one unit of BM is equivalent to x 12 (Nominal Size) board 1-foot long • To calculate the BM of lumber multiply the length in feet by the nominal width and thickness of the pieces in inches and divide the product by 12 • Pieces less than 1-inch thick are calculated using a thickness of one full inch © 2016, Southern Alberta Institute of Technology Board Measure We always use nominal dimensions To calculate board measure or board foot One Board Foot = ắ inch 12 inch 11 ẳ Note … Actual cross section dimensions of this board are ắ inch x 11 ẳ â 2016, Southern Alberta Institute of Technology The length is always expressed as the actual length Board Measure Nominal Dressed 1x2 ắ x1ẵ 1x4 ắ x3ẵ 1x3 ắ x2ẵ 2x4 1ẵx3ẵ 2x8 1ẵx7ẳ 2x6 x 10 1ẵx5ẵ 1ẵx9ẳ x 12 ẵ x 11 ẳ 3x3 2ẵx2ẵ x 14 4x4 6x6 ẵ x 13 ẳ 3ẵx3ẵ 5ẵ x 5ẵ â 2016, Southern Alberta Institute of Technology Board Measure 14 pieces of x 12 16 ft long 14 x x 12 x 16 x 1/12 = 896 BM 20 pieces of x 10 22 ft long 20 x x 10 x 22 x 1/12 = 1100 BM 19 pieces of x 14 20 ft long 19 x x 14 x 20 x 1/12 = 887 BM 120 pieces of x ft long 120 x x x x 1/12 = 640 BM 60 pieces of ¾ x 12 ft long 60 x ¾ x x 12 x 1/12 = 180 BM © 2016, Southern Alberta Institute of Technology Rough carpentry work – Measuring Notes Lumber is measured in linear metres or board measure Lumber generally shall be differentiated and measured separately on the basis of: dimensions, dressing, grade and species, etc Lumber required to have special treatment (e.g., pressure treated), must be kept separate and described Wall boards shall be measured in square metres (or square feet) No deductions are made for openings less than square metres (DDT Limit m2) Wall boards are classified and measured separately, in type of material and thickness © 2016, Southern Alberta Institute of Technology Rough Carpentry Work – Measuring Notes Lumber is measured in linear metres or board measure Lumber generally shall be differentiated and measured separately on the basis of: dimensions, dressing, grade and species, etc Lumber required to have special treatment (e.g., pressure treated), must be kept separate and described Wall boards shall be measured in square metres (or square feet) No deductions are made for openings less than square metres (DDT Limit m2) Wall boards are classified and measured separately, in type of material and thickness © 2016, Southern Alberta Institute of Technology Rough Carpentry Work – Measuring Notes Framing Work: Lumber for framing is classified and measured separately in the following categories: a) Plates b) Studs c) Joists d) Bridging e) Lintels f) Solid beams g) Built-up beam h) Rafters i) Ridges j) Hip and valley rafters k) Lookouts and overhangs (Eaves) l) Gussets and scabs m) Purlins n) Other framing items not listed © 2016, Southern Alberta Institute of Technology Finishes • Slab finishes are measured as the plan area of the concrete, and vertical finishes are measured as the exposed area of concrete • An item for screeds may be measured in square metres as the plan area of the slab • Curing slab is measured in plan area • Vapour barriers are also measured in plan area © 2016, Southern Alberta Institute of Technology Finishes – Measuring Notes • (Misc items in this class) Welded wire mesh is measured in plan area Net in Place Inserts into the concrete such as anchor bolts are described and enumerated in the takeoff Expansion joints are measured in linear metres Grout to anchor bolts and base plates are measured in cubic metres Saw cuts are measured in linear metres, stating the size of the cut Fabricating and placing reinforcing steel is often subcontracted by a general contractor Bar reinforcing is taken off by length of bar, which is then converted to a weight by multiplying the lengths by the unit weight per metre © 2016, Southern Alberta Institute of Technology Pouring Footings ã You Tube ã http://www.youtube.com/watch?v=odPDTsV4bwE â 2016, Southern Alberta Institute of Technology Reinforcing Steel Properties BAR AREA DIAMETER kg/M 15 200 16 1.570 10 20 25 30 35 100 300 500 700 1000 11.3 785 19.5 2.355 29.9 5.495 25.2 35.7 © 2016, Southern Alberta Institute of Technology 3.925 7.850 CONCLUSION o QUESTIONS? o SHAW Demo together o LONDON to be Assign # © 2016, Southern Alberta Institute of Technology Shaw Takeoff • We have calculated the centerline length previously • Begin with the footings and the concrete pads • The wall height is given on the drawings … confirm the bearing detail for the joists © 2016, Southern Alberta Institute of Technology Shaw Takeoff • Bulkheads are measured to the perimeter of the window • Basement slab area is less the wall thickness • Plan area for the slab is also used for screeding, finishing, curing • The vapor barrier under the slab is the plan area © 2016, Southern Alberta Institute of Technology Shaw Takeoff • In this case a ladder is used at the top of the wall so we’ll measure it here even though it is a carpentry item • Gravel under the slab can be measured here • Rebar lengths are 6m allow 400 mm for splicing © 2016, Southern Alberta Institute of Technology Shaw Takeoff • Parging and Damproofing … or the Wrap ã http://www.youtube.com/watch?v=bE9FXEQjakY â 2016, Southern Alberta Institute of Technology © 2016, Southern Alberta Institute of Technology © 2016, Southern Alberta Institute of Technology © 2016, Southern Alberta Institute of Technology Takeoff … Shaw House © 2016, Southern Alberta Institute of Technology .2 m 17.0 m3 403 kg © 2016, Southern Alberta Institute of Technology © 2016, Southern Alberta Institute of Technology